The Race-Spec Billet RSX Shifter with Pro Shift Cut is currently compatible with AEM Infinity, Haltech and Motec systems which all have programmable ecu inputs. The programmable interface unit will be needed for K-Pro applications and is purchased as an add-on option. We want to note that the Pro Shift Cut is not a bolt on option for existing shifters. It is only offered as a complete shifter with the sensor already mounted in place and ready for use. The shifter comes with a set of preset shift stops, to prevent over-shifting and a centering tool for perfect setup of our adjustable K-Tuned race-spec shift cables.